Special To Ols - Fluke PM3082 Service Manual

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8.9 SPECIAL TOOLS
8.9.1 Extension board
For test and repair purposes the units A3 and A6 can be plugged in their connectors via an extension
board. This board is available under ordering number 5322 218 61479. On this board there is a
jumper that can be removed to switch off the EHT-converter. For safety reasons it is strongly
recommended to use this feature.
8.9.2 Flash-ROM loader program
After calibration of the oscilloscope, the softkey 'save calibr data' must be pressed. This saves the
calibration data in the oscilloscope's internal Flash-ROM. When the oscilloscope is turned off now,
calibration data does not disappear with no back-up batteries installed. The save action can be done
10 times.
The Flash-ROM contains blocks of calibration data (of which the most recent block is valid) and the
operating software. After operation of softkey 'save calibr data', the text 'XX CALIBRATION FIELDS
FREE' is displayed. XX can be a figure between 10 ... 1 o r'NO'. In case o f'NO', the Flash ROM must
be emptied and redundant blocks of calibration data must be removed. To have this done, send your
oscilloscope to the nearest Service Center.
The data exchange takes place via the oscilloscope's RS232 interface. It occurs via a program
running on a Personal Computer with RS232 interface.
The Flash-ROM D1013 as listed in the parts lists is empty. After exchange it must be filled with
operating software and calibration data. Also for this the oscilloscope must be sent to the nearest
Fluke Service Center.
8.10 RECALIBRATION AFTER REPAIR
After any electrical component has been renewed the calibration of its associated circuit should be
checked, as well as the calibration of other closely-related circuits.
Since the power supply affects all circuits, calibration of the entire instrument should be checked it
work has been done in the power supply or if the transformer has been renewed.
CORRECTIVE MAINTENANCE PROCEDURES